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CAS 137589-77-6
ethyl 3-((1S)-1-((1S,3R,10R,13S,14R,17S)-1,3-bis((tert-butyldimethylsilyl)oxy)-10,13-dimethyl-2,3,4,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl)ethoxy)propanoate
Codes: MAXA-013
Application context (from source-drug indications)
Secondary hyperparathyroidismMaxacalcitolHyperparathyroidismMaxacalcitol
Source drugs (routes using this intermediate)
| Drug | Tier | Expiry |
|---|---|---|
| Maxacalcitol | Tier C — Watch / trade | - |
Position in synthesis routes (up/downstream chain)
Ordered by route registration; left → right is the synthesis direction. The highlighted node is the current CAS; others link to their own profiles.
(1S)-1-((1S,3R,10R,13S,14R,17S)-1,3-bis((tert-butyldimethylsilyl)oxy)-10,13-dimethyl-2,3,4,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl)ethan-1-ol→4-((1S)-1-((1S,3R,10R,13S,14R,17S)-1,3-bis((tert-butyldimethylsilyl)oxy)-10,13-dimethyl-2,3,4,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl)ethoxy)-2-methylbutan-2-ol→ethyl acrylate→ethyl 3-((1S)-1-((1S,3R,10R,13S,14R,17S)-1,3-bis((tert-butyldimethylsilyl)oxy)-10,13-dimethyl-2,3,4,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl)ethoxy)propanoate→(1S,3R,10R,13S,14R,17S)-17-((S)-1-(3-hydroxy-3-methylbutoxy)ethyl)-10,13-dimethyl-2,3,4,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthrene-1,3-diol
Intermediates available on this site
Side-by-side comparison of all listed offers on this CAS; price bands are list-price ranges, final price subject to RFQ confirmation.
| Supplier | Product | Price band | MOQ | Lead time | Qualifications | Action |
|---|---|---|---|---|---|---|
| Qualified Partner — East China API Works | PHOSPHINE OXIDE, [2-[3,5-BIS [[(1,1-DIMETHYLETHYL) DIMETHYLSILY]OXY]-2-METHYLENECYCLOHEXYLIDENE]ETHYL]DIPHENYL-,[3S-(1Z,3A,5B0)] Pharmaceutical Intermediates | On request | On request | On request | — | |
| Unibest Nantong cGMP Site | (1S,3aR,4S,7aS)-1-((S)-1-(3-hydroxy-3-methylbutoxy)ethyl)-7a-methyloctahydro-1H-inden-4-ol Pharmaceutical Intermediates | On request | On request | On request | — | |
| Unibest Taizhou GMP-like Site | (1S,3aR,7aR)-1-((S)-1-(3-hydroxy-3-Methylbutoxy)ethyl)-7a-Methylhexahydro-1H-inden-4(2H)-one Pharmaceutical Intermediates | On request | On request | On request | — | |
| Qualified Partner — East China API Works | (1S,3aR,7aR)-Octahydro-7a-Methyl-1-((1S)-1-(3-Methyl-3-((triMethylsilyl)oxy)butoxy)ethyl)-4H-Inden-4-one Pharmaceutical Intermediates | On request | On request | On request | — | |
| Unibest Nantong cGMP Site | (Z)-2-((3S,5R)-3,5-bis((tert-butyldiMethylsilyl)oxy)-2-Methylenecyclohexylidene)ethanol Pharmaceutical Intermediates | On request | On request | On request | — |
This is a CAS-level registry record: registrations across routes are merged. Supplier offers and buyer demands will be matched on this CAS as the primary key.